package com.xugongzhang.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author X
 * @date 2022/6/7 21:56
 */
@Service
public class PaymentService {

    /**
     * 正常访问,ok的方法
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id) {
        return "线程池: " + Thread.currentThread().getName() + " paymentInfo_OK,id: " + id;
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeoutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String paymentInfo_Timeout(Integer id) {
        int timeout = 3;
        try {
            TimeUnit.SECONDS.sleep(timeout);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池: " + Thread.currentThread().getName()
                + " paymentInfo_Timeout,id: " + id + "耗时: " + timeout;
    }

    public String paymentInfo_TimeoutHandler(Integer id) {

        return "线程池: " + Thread.currentThread().getName()
                + " paymentInfo_TimeoutHandler, 超时了 /(ㄒoㄒ)/~~,id: " + id;
    }
    // **********服务熔断*********

    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"), // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"), // 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"), // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"), // 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("id 不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "调用成功，流水号" + serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id不能为负数，请稍后再试 /(ㄒoㄒ)/~~ " + id;
    }
}
